281629612020 has 48 divisors (see below), whose sum is σ = 822848261760. Its totient is φ = 71835958656.

The previous prime is 281629611961. The next prime is 281629612027. The reversal of 281629612020 is 20216926182.

It is a self number, because there is not a number n which added to its sum of digits gives 281629612020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281629612027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102038335 + ... + 102041094.

It is an arithmetic number, because the mean of its divisors is an integer number (17142672120).

Almost surely, 2^281629612020 is an apocalyptic number.

281629612020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281629612020 is an abundant number, since it is smaller than the sum of its proper divisors (541218649740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281629612020 is a wasteful number, since it uses less digits than its factorization.

281629612020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204079464 (or 204079462 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 281629612020 in words is "two hundred eighty-one billion, six hundred twenty-nine million, six hundred twelve thousand, twenty".